Stepping motor with different sized or missing teeth

Details Stepping motor with different sized or missing teeth Stepping motor with different sized or missing teeth

1995-02-02

1997-01-28

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310257, 310258, 29596, 310 43, 310193, H02K 3700

Patent

active

055980465

ABSTRACT:
A width of polar teeth is made smaller at a region close to a gate portion 20 than a width of the polar teeth at the other region or a part of the polar teeth is eliminated at the region close to the gate portion 20 and the gap between the polar teeth is thereby increased so as to provide such a cavity as to facilitate the flow of a resin in an axial direction between the polar teeth, whereby the flow of the resin is facilitated.

REFERENCES:
patent: 4355248 (1982-10-01), Manson
patent: 4695419 (1987-09-01), Inariba
patent: 4841190 (1989-06-01), Matsushita et al.
patent: 4884333 (1989-12-01), Cooper et al.
patent: 4942325 (1990-07-01), Fukaya
patent: 4972109 (1990-11-01), Kakizaki et al.
patent: 5121017 (1992-06-01), Yamamoto et al.
patent: 5170082 (1992-12-01), Nakagawa et al.
patent: 5283487 (1994-02-01), Oki et al.
patent: 5331237 (1994-07-01), Ichimura

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